Samsung AM080BXMDGH/EU - 4-3-32 : Suspension of starting by abnormal compression ratio

Troubleshooting
4-44 Samsung Electronics
4-3-32 : Suspension of starting by abnormal compression ratio
1.
Cause of problem
Yes
Are the 4Way Valve normally
operating?
Are the Indoor Unit and Outdoor
Unit EEV normally operating?
Is current of compressor normally?
Complete
Auto Trial Operation
Replace defective sensor
Check the 4Way Valve
Check the relevant EEV
Compressor Inspection
Check the refrigerant
Yes
Yes
No
Is the S-net estimated value and the
Manifold Gauge value in range?
Connect S-net and Manifold Gauge.
(essential requirement)
No
No
No
No
Outdoor unit display
Indoorunit display
Judgment Method
∙ Compression ratio [(High pressure+1.03)/(Low pressure+1.03)] less than 1.5 and lasts for 10 minutes or more
∙ Differential pressure (high pressure - low pressure) less than 0.4 MPa.g and lasts for 10 minutes or more
Cause of problem
∙ Indoor and Outdoor EEV breakdown
∙ 4Way Valve breakdown
∙ High and Low pressure sensor defective
∙ Refrigerant shortage
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation
Defrost Timer Fan Filter/MPI
Operation
Defrost Timer Filter
Operation
Timer Turbo
24℃ 27℃
× × ◑ ◑ ◑ × ◑ ◑ ◑ × × ◑ ◑ ◑
※ ● : ON ◑ : Flash × : OFF